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ISSN Druckformat: 2151-4798
ISSN Online: 2151-562X
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STUDY OF TORSIONAL VIBRATIONS IN POROELASTIC DISSIPATIVE THICK-WALLED HOLLOW CYLINDER IN THE PRESENCE OF AN INITIAL STRESS
ABSTRAKT
This paper studies torsional vibrations of a poroelastic dissipative thick-walled hollow cylinder in the presence of an initial stress. Governing equations are derived from Biot's incremental deformation theory. Under stress-free boundary conditions, frequency equations are obtained in the case of dissipation. The limiting cases of a solid cylinder and thin shell are discussed. The complex valued frequency equation gives the frequency and attenuation. A comparative study has been made between elastic and poroelastic cylinders. Numerical results are depicted graphically and then discussed.
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